I'm in a prediction-making mood this monday morning, and since this is a thread outside of the development area that barely anyone reads, I'm going to plunk down a couple of hypotheses. Take em' or leave em'
Hypothesis 1: Covid will inevitably lead to a strengthening of urbanism (relative to the suburbs), rather than the opposite.
Hypothesis 1a: If offices are going to be more like "hubs," even if many employees aren't going to go there every day, it makes zero sense to locate them in a non-hub-like location (i.e., the suburbs). Suburbs are poorly located and poorly connected; even if people go in to the office rarely, it still makes no sense to locate offices there. Not only will companies who were already based in cities choose to stay there (though they may decrease square footage), many more companies will choose to actually relocate their downsized offices into cities. Suburban-based offices will no longer make much sense, since no individual suburb/environs can house many people and people have a decreased tolerance for inconvenient commutes (even if only ~2 days/wk); therefore, offices will instead to converge into centralized locations.
Hypothesis 1b: City residential life will thrive, even more so than pre-Covid. More people can live where they want now, and a lot of those people will choose cities. A subset of young people worked in suburban office park campuses, but most of them didn't really want to be there - young people tend to crave cities. So now that there's more flexibility, those young individuals will converge where most of their friends are: cities. If one only needs to commute a couple days a week, more of such young people will choose a reverse commute so they can spend more time in the city. Further, many retiring baby boomers who don't want the big house and yard will also move into cities where maintenance-free living and services/amenities are plentiful.
Hypothesis 2: the main outflow from cities will be people in their early 30s once they start families. Unfortunately and sadly, these folks don't trust city school systems. Also, these early 30-somethings crave being able to show their families/extended families that they've "made it," which involves having a big house and yard to show off and a big enough dining room table to be able to host holidays (gotta pick up the torch from mom and dad, so everyone feels validated). These strong social forces will still draw many 30-somethings out of cities (where they will then complain that their companies don't do enough to support them), but it will not be a net-negative outflow overall, as the 20-somethings and boomers will produce a larger positive inflow. Also, as today's 20-somethings age with an urban orientation and with parents who are now urban, fewer 30-somethings will flee the city in 10+ years from now.
My prediction is that good news lies ahead for cities.